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Ten'ō (天応) was a Japanese era name (年号, nengō, lit. "year name") after Hōki and before Enryaku. This period lasted from January 781 through August 782.^[1] The reigning emperor was Kōnin-tennō (光仁天皇).^[2]

• 24 October 781 Ten'ō gannen (天応元年): The new era name was created to mark an event or series of events. The previous era ended and the new one commenced in Hōki 12, on the 1st day of the 1st month of 781.^[3]

• 22 December 781 (Ten'ō 1, 3rd day of the 12th month): In 11th year of the reign of Emperor Kōnin's reign (光仁天皇11年), he abdicated; and the succession (the senso) was received by his son.^[4] Shortly thereafter, Emperor Kammu is said to have acceded to the throne (sokui).^[5]

• Brown, Delmer M. and Ichirō Ishida, eds. (1979). Gukanshō: The Future and the Past. Berkeley: University of California Press. ISBN 978-0-520-03460-0; OCLC 251325323
• Nussbaum, Louis-Frédéric and Käthe Roth. (2005). Japan encyclopedia. Cambridge: Harvard University Press. ISBN 978-0-674-01753-5; OCLC 58053128
• Titsingh, Isaac. (1834). Nihon Odai Ichiran; ou, Annales des empereurs du Japon. Paris: Royal Asiatic Society, Oriental Translation Fund of Great Britain and Ireland. OCLC 5850691
• Varley, H. Paul. (1980). A Chronicle of Gods and Sovereigns: Jinnō Shōtōki of Kitabatake Chikafusa. New York: Columbia University Press. ISBN 9780231049405; OCLC 6042764

• National Diet Library, "The Japanese Calendar" -- historical overview plus illustrative images from library's collection